diff --git a/flexifly-merged.kicad_pcb b/flexifly-merged.kicad_pcb
index 6edba83..d53262a 100644
--- a/flexifly-merged.kicad_pcb
+++ b/flexifly-merged.kicad_pcb
@@ -3601,7 +3601,7 @@
   (gr_text "DAT0" (at 114.25 66.75 180) (layer "F.SilkS") (tstamp e8aa80b4-156c-4749-9e13-4618ed5cd879)
     (effects (font (size 1 1) (thickness 0.15)) (justify left))
   )
-  (gr_text "user.1 layer defines the stiffener.\nit is supposed to go on the back side (in this drawing)\n\ndepending on the fab you may need to\nremove the stiffener from the fpc plugs\non the usb board and the soc cable\nto match the required thickness\nfor the fpc connectors" (at 98.6 35.6) (layer "Cmts.User") (tstamp dc200725-9df2-42a2-8e19-e6c9640d5a36)
+  (gr_text "user.1 layer defines the stiffener.\nit is supposed to go on the back side (in this drawing)\n\nensure that the pcb including stiffener\nis 0.30±0.02mm thick. this dimension is needed for\nthe fpc connectors on the main board.\nthis can be achieved with e.g. jlcpcb flex with either:\n- 0.11mm pcb thickness, 0.20mm polyimide stiffener\n- 0.2mm pcb thickness, 0.1mm polyimide stiffener" (at 98.6 35.6) (layer "Cmts.User") (tstamp dc200725-9df2-42a2-8e19-e6c9640d5a36)
     (effects (font (size 1 1) (thickness 0.15)) (justify left bottom))
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@@ -11086,7 +11446,7 @@
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@@ -11114,8 +11474,12 @@
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@@ -11125,12 +11489,14 @@
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@@ -11160,12 +11526,146 @@
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+        (xy 132.187999 54.519219)
+        (xy 132.249999 54.502606)
+      )
+    )
+  )
+  (zone (net 0) (net_name "") (layer "User.1") (tstamp 10400053-21f4-4465-8323-7ba20c2fbbb4) (hatch edge 0.5)
+    (connect_pads (clearance 0.5))
+    (min_thickness 0.25) (filled_areas_thickness no)
+    (fill yes (thermal_gap 0.5) (thermal_bridge_width 0.5) (smoothing fillet) (radius 0.25))
+    (polygon
+      (pts
+        (xy 128.25 54.5)
+        (xy 144.25 54.5)
+        (xy 144.25 77.5)
+        (xy 128.25 77.5)
+      )
+    )
+    (filled_polygon
+      (layer "User.1")
+      (island)
+      (pts
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diff --git a/flexifly-merged.kicad_prl b/flexifly-merged.kicad_prl
index c82551d..279f90b 100644
--- a/flexifly-merged.kicad_prl
+++ b/flexifly-merged.kicad_prl
@@ -1,6 +1,6 @@
 {
   "board": {
-    "active_layer": 44,
+    "active_layer": 50,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_netclasses": [],
diff --git a/flexifly.kicad_pcb b/flexifly.kicad_pcb
index 55068df..1de9ad2 100644
--- a/flexifly.kicad_pcb
+++ b/flexifly.kicad_pcb
@@ -3623,7 +3623,7 @@
   (gr_text "NVIDIA" (at 115 65.25 -270) (layer "Dwgs.User") (tstamp a2e6e93a-505e-4841-8a06-fcf613606214)
     (effects (font (size 1 1) (thickness 0.15)) (justify bottom))
   )
-  (gr_text "user.1 layer defines the stiffener.\nit is supposed to go on the back side (in this drawing)\n\ndepending on the fab you may need to\nremove the stiffener from the fpc plugs\non the usb board and the soc cable\nto match the required thickness\nfor the fpc connectors" (at 98.6 35.6) (layer "Cmts.User") (tstamp dc200725-9df2-42a2-8e19-e6c9640d5a36)
+  (gr_text "user.1 layer defines the stiffener.\nit is supposed to go on the back side (in this drawing)\n\nensure that the pcb including stiffener\nis 0.30±0.02mm thick. this dimension is needed for\nthe fpc connectors on the main board.\nthis can be achieved with e.g. jlcpcb flex with either:\n- 0.11mm pcb thickness, 0.20mm polyimide stiffener\n- 0.2mm pcb thickness, 0.1mm polyimide stiffener" (at 98.6 35.6) (layer "Cmts.User") (tstamp dc200725-9df2-42a2-8e19-e6c9640d5a36)
     (effects (font (size 1 1) (thickness 0.15)) (justify left bottom))
   )
 
diff --git a/flexifly.kicad_prl b/flexifly.kicad_prl
index 1165bf6..c162e4a 100644
--- a/flexifly.kicad_prl
+++ b/flexifly.kicad_prl
@@ -1,6 +1,6 @@
 {
   "board": {
-    "active_layer": 0,
+    "active_layer": 50,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_netclasses": [],
@@ -64,7 +64,7 @@
       39,
       40
     ],
-    "visible_layers": "ff8efff_ffffffff",
+    "visible_layers": "ffcefff_ffffffff",
     "zone_display_mode": 0
   },
   "meta": {